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Finding the Fourth Proportional to 35.44, 53.35 and 30.40

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Solution

The fourth proportional to 35.44, 53.35 and 30.40 is: 45.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.44 : 53.35 = 30.40 : x
  2. Step 2: Convert to fraction form
    35.44/53.35 = 30.40/x
  3. Step 3: Cross multiply
    35.44x = 53.35 × 30.40
  4. Step 4: Simplify right side
    35.44x = 1,621.84
  5. Step 5: Solve for x
    x = 1,621.84/35.44
  6. Step 6: Final answer
    x = 45.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.